16000809 has 16 divisors (see below), whose sum is σ = 23385024. Its totient is φ = 9651200.

The previous prime is 16000799. The next prime is 16000813. The reversal of 16000809 is 90800061.

16000809 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 16000809 - 2¹⁵ = 15968041 is a prime.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (16000819) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6649 + ... + 8729.

It is an arithmetic number, because the mean of its divisors is an integer number (1461564).

Almost surely, 2^16000809 is an apocalyptic number.

It is an amenable number.

16000809 is a deficient number, since it is larger than the sum of its proper divisors (7384215).

16000809 is a wasteful number, since it uses less digits than its factorization.

16000809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2328.

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 16000809 is about 4000.1011237217. The cubic root of 16000809 is about 251.9884568913.

The spelling of 16000809 in words is "sixteen million, eight hundred nine", and thus it is an aban number.